I note several sites asking but no clues until I hit on a PianoWorld.com forum...
Josh asked & Wayne answered...'I think it's Chopin's Noctune #19 in E minor, Opus 72 No. 1.'
I believe he is correct. I have been listening to the scene on my DVD of TOMBSTONE versus a great clip of that piece by a brilliant pianist ( 'Sviatoslav Richter plays Chopin Nocturne E Minor, Op. 72, #1' ) on YouTube.
It is hard to be certain considering the wonderfully appropriate tinniness of the poorly maintained upright, the dialogue and Val Kilmer's portrayal of an inebriates version of this nocturne in the film but I think it's a match.
After several reviews of the movie scene and the web clip it seems that Doc is playing early in the piece (about 25 seconds into the clip).
I may be wrong but it was certainly worth watching clips of one my favorite movies and listening to Richter playing anything, let alone Chopin.
no
Rachmaninoff's Second Piano Concerto
Prelude for Piano No. 15 in D Flat Major, Opus 28, No. 15 by Chopin
The musical piece "Bella's Lullaby" from the Twilight movie soundtrack was composed by Carter Burwell, not on the piano but as an orchestral piece. However, the character Edward Cullen plays a simplified piano version in the film.
i play the piano!
Murray Gold wrote it for the score of the 2009 movie (with Sarah Michelle Gellar) and it does not have a name; he refers to it as 'Veronica Decides to Die Piano Scene'.
You first obtain the music for this piece, then you find a piano, learn the piece, practice it for days and months, then play it for a concert on the piano.
1992
Mendelssohn Piano concerto
My understanding is, he learned to play the piano for "The competition" so that when he was filmed it would appear that he was playing, but another pianist actually played the piece.
Six Pieces for Piano, Op.118 - No. 2, Intermezzo in A.
Find a piece of piano music